South Taranaki Water Supplies Monitoring Programme Annual Report 2015-2016
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South Taranaki Water Supplies Monitoring Programme Annual Report 2015-2016 Technical Report 2016-103 South Taranaki Water Supplies Monitoring Programme Annual Report 2015-2016 Technical Report 2016-103 Taranaki Regional Council ISSN: 1178-1467 (Online) Private Bag 713 Document: 1682202 (Word) STRATFORD Document: 1720446 (Pdf) August 2016 Executive summary The South Taranaki District Council (STDC) operates a total of 11 water treatment plants (WTP’s) throughout the district. STDC holds 34 resource consents which include 317 conditions setting out the requirements that must be satisfied. STDC holds 15 consents to take water, ten consents to discharge to both land and water, and nine consents to construct and maintain in-stream structures. Oaonui Water Supply Limited (OWSL) operates the Oaonui WTP. OWSL hold two resource consents which include a total of 15 conditions setting out requirements that must be satisfied. OWSL holds one consent to abstract water and one consent to maintain an in-stream structure. The Nukumaru Water Scheme Society Incorporated (NWSSI) operates a rural water supply scheme. NWSSI holds one consent to take groundwater, this consent has seven conditions. Cold Creek Water Supply Limited (CCWSL) operates a private WTP in the Cold Creek catchment. There are three consents associated with CCWSL‘s WTP with a total of 27 conditions. There is one consent to cover water abstraction, one to maintain an in-stream structure, and one to discharge treated backwash. This report for the period July 2015 to June 2016 describes the monitoring programme implemented by the Taranaki Regional Council (the Council) to assess the environmental performance of the four organisations during the period under review, and the results and environmental effects of their activities. During the monitoring period, STDC demonstrated an overall high level of environmental performance. During the monitoring period, OWSL demonstrated an overall good level of environmental performance. During the monitoring period, NWSSI demonstrated an overall high level of environmental performance. During the monitoring period, CCWSL demonstrated an overall good level of environmental performance. During the 2015-2016 monitoring period the Council’s monitoring programme included 14 inspections, the collection of ten water samples for physicochemical analysis, four biomonitoring surveys of receiving water, four fish surveys, and the review of abstraction data provided by the consent holders. Chemical sampling of discharges and receiving waters, macroinvertebrate surveys and fish surveys, all indicated that the water supply schemes did not appear to be causing any significant adverse environmental effects. During the monitoring period, STDC demonstrated an overall high level of environmental performance and a high level of administrative performance. During the monitoring period, OWSL demonstrated an overall good level of environmental performance and a good level of administrative performance. During the monitoring period, NWSSI demonstrated an overall high level of environmental and a good level of administrative performance. During the monitoring period, CCWSL demonstrated an overall good level of environmental performance and a good level of administrative performance. For reference, in the 2015-2016 year, 71% of consent holders in Taranaki monitored through tailored compliance monitoring programmes achieved a high level of environmental performance and compliance with their consents, while another 24% demonstrated a good level of environmental performance and compliance with their consents. In terms of overall environmental and compliance performance by the consent holders over the last several years, this report shows that the consent holder’s performance remains at a good or high level in the year under review. During the monitoring period there were three incidents recorded in relation to activities covered by this report. None of these incidents resulted in any significant adverse environmental effects. This report includes recommendation for the 2016-2017 year. i Table of contents Page 1. Introduction 1 1.1 Compliance monitoring programme reports and the Resource Management Act 1991 1 1.1.1 Introduction 1 1.1.2 Structure of this report 1 1.1.3 The Resource Management Act 1991 and monitoring 2 1.1.4 Evaluation of environmental and administrative performance 2 1.2 Process description 4 1.3 Resource consents 10 1.3.1 Abstraction consents 10 1.3.2 Landuse consents (structures) 10 1.3.3 Discharge consents 11 1.4 Monitoring programme 11 1.4.1 Introduction 11 1.4.2 Programme liaison and management 11 1.4.3 Site inspections 12 1.4.4 Chemical sampling 12 1.4.5 Biomonitoring 12 1.4.6 Hydrological surveys 12 1.4.7 Review of abstraction data 12 1.4.8 Review of reports required by consents 12 2. Results 13 2.1 Inspections 13 2.2 Results of discharge monitoring 15 2.2.1 Kapuni WTP 15 2.2.2 Opunake WTP 16 2.2.3 Waimate West WTP 17 2.3 Discharge data review 17 2.4 Results of biomontoring 17 2.4.1 Macroinvertebrate surveys 17 2.4.2 Fish surveys 21 2.5 Abstraction data 24 2.6 Residual Flow data 25 3. Investigations, interventions, and incidents 26 4. Discussion 28 4.1 Discussion of site performance 28 4.1.1 STDC WTP’s 28 4.1.2 Cold Creek WTP 28 4.1.3 Oaonui WTP 28 4.1.4 Nukumaru water supply 28 ii 4.2 Environmental effects of exercise of consents 29 4.3 Evaluation of performance 29 4.3.1 Cold Creek WTP 29 4.3.2 Eltham WTP 31 4.3.3 Hawera WTP 34 4.3.4 Inaha WTP 38 4.3.5 Opunake WTP 42 4.3.6 Patea WTP 43 4.3.7 Pope WTP 44 4.3.8 Rahotu WTP 45 4.3.9 Wai-inu Beach water supply 46 4.3.10 Waimate West WTP 47 4.3.11 Waverley water supply 52 4.3.12 Waverley Beach water supply 52 4.3.13 Oaonui WTP 53 4.3.14 Nukumaru water supply 54 4.4 Summary of performance evaluation 55 4.5 Recommendations from the 2014-2015 Annual Report 55 4.6 Alterations to monitoring programmes for 2016-2017 55 4.7 Exercise of optional review of consent 56 5. Recommendations 58 Glossary of common terms and abbreviations 59 Bibliography and references 60 Appendix I Resource consents held by STDC, CCWSL, OWSL and NWSSI Appendix II Biomonitoring and fish survey reports iii List of tables Table 1 South Taranaki water supplies resource consents and processes 5 Table 2 Kapuni WTP sample results 17 November 2015 16 Table 3 Kapuni WTP sample results 14 June 2016 16 Table 4 Results of sampling at the Opunake WTP 15 March 2016 17 Table 5 Results of sampling at the Inaha WTP 16 March 2016 17 Table 6 Summary of abstraction data 24 Table 7 Residual flow assessment 25 Table 8 Summary of performance for Consent 1134-3 29 Table 9 Summary of performance for Consent 5454-1 30 Table 10 Summary of performance for Consent 6077-1 31 Table 11 Summary of performance for Consent 0213-3 31 Table 12 Summary of performance for Consent 0989-3 32 Table 13 Summary of performance for Consent 1810-3 33 Table 14 Summary of performance for Consent 1811-3 33 Table 15 Summary of performance for Consent 0146-2 34 Table 16 Summary of performance for Consent 0933-3 34 Table 17 Summary of performance for Consent 5596-1 35 Table 18 Summary of performance for Consent 7002-1 36 Table 19 Summary of performance for Consent 7413-1 36 Table 20 Summary of performance for Consent 7446-1 37 Table 21 Summary of performance for Consent 7447-1 38 Table 22 Summary of performance for Consent 1185-3 38 Table 23 Summary of performance for Consent 1186-3 39 Table 24 Summary of performance for Consent 3927-2 40 Table 25 Summary of performance for Consent 3928-2 40 Table 26 Summary of performance for Consent 4102-2 40 Table 27 Summary of performance for Consent 5365-1 41 Table 28 Summary of performance for Consent 0232-4 42 Table 29 Summary of performance for Consent 5574-2 42 Table 30 Summary of performance for Consent 9473-1 43 Table 31 Summary of performance for Consent 3388-3 43 Table 32 Summary of performance for Consent 4446-2 44 Table 33 Summary of performance for Consent 3696-3 45 Table 34 Summary of performance for Consent 6038-1 46 Table 35 Summary of performance for Consent 3770-3 46 Table 36 Summary of performance for Consent 0129-3 47 Table 37 Summary of performance for Consent 0634-3 47 Table 38 Summary of performance for Consent 0635-3 48 Table 39 Summary of performance for Consent 3911-2 49 Table 40 Summary of performance for Consent 4826-2 50 Table 41 Summary of performance for Consent 5451-1 50 Table 42 Summary of performance for Consent 5452-1 51 Table 43 Summary of performance for Consent 3313-3 52 Table 44 Summary of performance for Consent 9563-1 52 Table 45 Summary of performance for Consent 0231-3 53 Table 46 Summary of performance for Consent 5453-1 54 Table 47 Summary of performance for Consent 6451-1 54 Table 48 Consents due for review in June 2017 56 iv List of figures Figure 1 Location of STDC, CCWSL and OWSL resource consents 8 Figure 2 Location of STDC and NWWSI consents 9 Figure 3 Aerial photo showing locations of the Kapuni WTP, and relevant sampling sites 15 1 1. Introduction 1.1 Compliance monitoring programme reports and the Resource Management Act 1991 1.1.1 Introduction This report is the Annual Report for the period July 2015 to June 2016 by the Taranaki Regional Council (the Council) on the monitoring programme associated with resource consents held by the South Taranaki District Council (STDC), Nukumaru Water Scheme Society Incorporated (NWSSI), Oaonui Water Supply Limited (OWSL) and Cold Creek Water Supply Limited (CCWSL).